Calcium-carbid package.



No. 728,889. PATENTED MAY 28, 1908.

J. EWING, JR- 8 CALCIUM GARBID PACKAGE.

APPLIOA TION ITILEDDEO. 22, 1902.

H0 MODEL.

Witnesses. Inventor.

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UNIT D STATES Patented May 26, 1903.

JOHN EWING, JR., OF RICHMOND, CANADA.

CALCIUM-CARBID PACKAGE.

SPECIFICATION forming part of Letters Patent No. 728,889, dated May 26, 1903.

Application filed December 22, 1902. Serial No. 186,212. (No model.)

To aZZ whom it may concern.-

Be it known that I, JOHN EWING, Jr. a subject of the King of Great Britain, residing at Richmond, in the county of Richmond, Province of Quebec, Canada, have invented certain new and useful Improvements in Calcium-Oarbid Packages, of which the following is a specification.-

My invention relates to improvements in devices for containing chemical constituents; and the object of the invention is to provide a receptacle for containinga soluble constituent which shall be when not in use impermeable to the influence of moisture and when in use free for aliquid to penetrate therethrough and whereby great economy of the constituent is effected and the cleanliness of the device facilitated; and it consists, essentially, of a bag or tube of porous material closed at each end, designed to contain a soluble constituent and having securely attached to one end thereof a string or wire, and a casing of impermeable material covering the aforesaid bag and the length of string, the Various parts being constructed in detail as hereinafter more particularly described.

Figure l is a perspective view of the constituent-receptacle closed. Fig. 2 is a perspective view of the constituent-receptacle open and bag ready for removal from the outer casing. Fig. 3 is a perspective view of the constituent-bag removed from the outer casing. Fig. 4 is a cross sectional view through A B in Fig. 1.

Like letters of reference indicate corresponding parts in each figure.

a is the bag, made of porous material and designed to contain calcium of carbid or other suitable constituent toward the formation of a gas.

b is a string designed to close one end of the bag a.

c is a charge of calcium carbid inserted in the bag 0:, though it must be here understood that while I confine this description to calcium of carbid any other suitable constituent may be used.

d is an outer casing, of tin-foil or other impermeable material, and designed to completely inclose the bag a, having the string 1) stretched lengthwise thereon, the end of the said string 1) protruding through the outer casing at c.

Having explained the particular arrangement of the parts, I shall now more fully describe the utility of this device.

The use of calcium of carbid has become very general in the generation of gas, and it is now being utilized for many purposes other than actual lighting, and particular among these is its property for inflation purposesthat is to say, the speed and certainty with which a collapsible bag or tube may be filled with gas.

It is with the intention of providing a cleanly means of loading an article, such as a marine life-pre'server, that I have provided a cartridge of carbid such as is described in the foregoing and shown in the drawings. This cartridge of carbid may be used generally for gas-generating; but it is especially well adapted to life-preservers, as aforesaid, and for hot-gas bags and such devices for replacing the present form of hot-water bags. Another use which this form of receptacle may be put to is for bicycle-lamps, and, in fact, anywhere where it is desirable to keep the hands of the user clean and free from the disagreeable sediment of the carbid and where speed in cleansing is desirable to escape the unpleasant smell emanating from the gas-generating chamber.

The receptacle as described herein practically explains itself as regards its operation and convenience.

It will be seen that the impermeable nature of the outer casing will prevent the passage of any moisture to the cartridge during transport from the factory to the user no matter where or how long the receptacle may remain within the said outer casing.

The porous nature of the covering for the carbid freely allows the water to penetrate therein, and as the carbid is a soluble substance a sediment is formed during the generation of the gas. This sediment'will remain inside the porous covering and may be removed, with the bag ya, when the same is withdrawn by means of the string b from" a gas-generating chamber.

The advantage of stretching the string along the bag before the impermeable casing is rial and means connected with the cartridge for rupturing the outer casing, substantially as described.

2. A calcium-carbid cartridge comprising a close porous inner casing containing the carbid, a tin-foil wrapper inclosing the porous casing, and a rupturing-string connected to the inner casing and extending a suitable distance underneath the tin-foil wrapper and then projecting through the same, substantially as described.

Signed at Richmond, in the district of St. Francis, in the Province of Quebec, Canada, this 17th day of December, 1902.

JOHN EWING, JR.

Witnesses:

H. C. FRASER, DONALD ROWAT. 

